MESA, Ariz. (AP) Chicago Cubs owner Tom Ricketts said Wednesday he found it ''surreal'' to see GOP presidential candidate Donald Trump ''threaten'' his mother on Twitter over her political contributions.

Earlier this week, Trump posted a tweet that said: ''I hear the Ricketts family, who own the Chicago Cubs, are secretly spending $'s against me. They better be careful, they have a lot to hide!'' The reference was to a reported campaign contribution made by Ricketts' mother, Marlene, to an anti-Trump PAC.